How do I search for tools on GoChronos?

Type any keyword into the search bar on the /search page (or click the search icon in the header). Results appear instantly, ranked by relevance. Pressing the keyboard shortcut (Cmd/Ctrl+K) also opens search from anywhere on the site.

How many tools are searchable?

All 80+ GoChronos tools across every category (Time, Planning, Health, Finance, Developer, Cricket, Utilities and more) are indexed and searchable.

Does search require an internet connection?

No. Search is entirely client-side. The complete tool catalogue is bundled in the app and results appear instantly with no network request.

Can I share a search link?

Yes. The search query is encoded in the URL as ?q=your+query, so you can bookmark or share a direct link to pre-filled search results.

Is GoChronos search free?

Yes. Completely free, requires no account and works offline.

Search GoChronos Tools

GoChronos Tool Directory — Browse All 80+ Free Tools

Search and discover free online tools for time, dates, health, finance, cricket, security, developer utilities and more at https://gochronos.com.

Time & Clocks

World Clock — Live world clock with current times in hundreds of cities, an interactive day/night map, UTC offsets and quick timezone comparisons. Ad-free, works offline.
Calendar — Multi-system calendar with Gregorian, Hindu, Saka, Hijri and Hebrew date conversion. Navigate any month across five calendar systems with a single click.
Holidays — Browse public holidays, bank holidays and national observances by country and year. Covers 60+ countries with filterable calendars and printable year views.
Timers — Precision stopwatch & countdown timer and Pomodoro focus timer in one ad-free hub.
Stopwatch & Countdown — Precision stopwatch with lap timing and split times, plus a countdown timer to any future date or duration.
Pomodoro — Classic 25-minute focus / 5-minute break Pomodoro timer with customisable session lengths, audio alerts and session counter. Free, ad-free, works offline.
Multi-Timer & Presets — Run multiple named timers simultaneously. Includes kitchen, workout and focus presets, plus a custom interval timer for rounds of work and rest.
Discover — Explore notable historical events, births, deaths and observances that happened on today's date across centuries of recorded world history. Updated daily.

Planning & Dates

Time Zones — All GoChronos timezone tools in one place: world clock, timezone converter, meeting planner and team roster. Find the best meeting time across any time zones.
Timezone Converter — Instantly convert times between any two cities, UTC offsets or timezones. Compare multiple zones side by side for calls, travel and meeting scheduling.
Meeting Planner — Find the best meeting time across time zones with an interactive heatmap and timeline view. Export to Google Calendar, Outlook or ICS and share a pre-filled link.
Team Roster — Track your distributed team's working hours, local times and overlap windows in one shared roster. See who is online now and plan handoffs across time zones.
Date Calculators — Calculate the difference between two dates, add or subtract days, and work with Unix timestamps and cron expressions.
Date Difference — Find the exact number of years, months, weeks, days, hours and minutes between any two dates.
Add / Subtract Dates — Add or subtract days, weeks, months or years from any starting date and instantly see the resulting date and day of the week. Ideal for deadline planning.
Work Days Calculator — Count working days between dates, excluding weekends and public holidays for the US, UK, India, Canada, Australia and Germany.
Duration Calculator — Calculate the precise time duration between two timestamps in hours, minutes and seconds. Perfect for billing, race results, log analysis and elapsed time.
Unix Timestamp — Convert Unix epoch timestamps to and from human-readable dates with millisecond precision.
Cron Translator — Translate cron expressions to human-readable schedules and preview upcoming run times.

Life, Health & Finance

Travel & Sky — Precise sunrise, sunset, golden hour and moon phase times for any destination. Plan travel photography, early hiking starts and evening sky-gazing events.
Sun & Moon — Precise sunrise, sunset, golden hour and twilight times plus moon phase, illumination, moonrise and moonset for any city.
Sky Events — Upcoming meteor showers, dark-sky viewing conditions and the full celestial event calendar for your city. Never miss a meteor shower or aurora opportunity.
Trip Countdown — Count down to your next trip and build a smart packing checklist you can save and share. Never forget a passport, charger or essential travel document again.
Personal Time & Age — Find your exact age in years, months, days and hours, and track birthdays, anniversaries and life milestones. Fully private — runs in your browser.
Health & Body — Free health calculators: BMI with WHO guidance, plus a metabolic suite covering BMR, TDEE and daily calorie & macro targets.
BMI Calculator — Calculate your body mass index in metric or imperial units, with WHO weight categories and an ideal-weight range. Free, private, nothing uploaded.
Metabolic Calculator — All-in-one metabolic calculator: basal metabolic rate (BMR), total daily energy expenditure (TDEE) and calorie & macro targets for any goal.
Finance & Numbers — Free finance calculators: loan amortisation, tip splitting, percentage maths and GPA calculation in one ad-free hub.
Loan & Mortgage — Calculate loan, mortgage or auto EMI with full amortisation schedule, total interest and payoff timeline.
Tip & Bill Split — Calculate tip amount and split a bill between any number of people with custom tip percentages and rounding.
Percentage Calculator — Calculate percentage of a number, percent change, increase, decrease and percentage difference with worked steps.
GPA Calculator — Calculate weighted and unweighted GPA across courses with custom grade scales and credit hours.
Random & Fun — Spin a decision wheel, roll dice, flip coins, pick names, generate random numbers and more — all ad-free.
Decision Wheel — Spin a customisable wheel of fortune to pick a winner, decide an outcome or choose randomly from any list.
Random Number Generator — Generate one or many random integers or decimals within any range, with optional uniqueness and sorting.
Dice Roller — Roll any combination of polyhedral dice with totals, modifiers and roll history for tabletop games.
Coin Flip — Flip a virtual coin once or in bulk and track heads-versus-tails statistics across the session.
Name Picker — Pick a random name or item from your list with optional removal so the same entry isn't drawn twice.
Tally Counter — Simple tally counter to count anything with increment, decrement, reset and a persistent running total.
Birthday Paradox — Compute the probability that two people in a group share a birthday. Includes Monte-Carlo simulation and reverse lookup.
Cricket Calculators — Cricket maths in one place: current run rate, required run rate, batting strike rate, net run rate (NRR), DLS revised targets and an overs-to-balls converter.
Run Rate & Chase — Calculate current run rate and required run rate for chases with overs, balls and target inputs.
Batting & Bowling Stats — Calculate batting strike rate and bowling economy rate from runs, balls faced and overs bowled.
Duckworth–Lewis (DLS) — Estimate revised targets in rain-affected limited-overs cricket matches using the Duckworth-Lewis-Stern method.
Net Run Rate — Compute team net run rate across a tournament from runs scored, runs conceded and overs played and bowled.
Overs ↔ Balls Converter — Convert between cricket overs (e.g. 12.3) and total balls bowled, with addition and subtraction support.

Developer & Utility Tools

Security & IDs — Developer security utilities: password and passphrase generation, UUID/ULID/NanoID, JWT decoding, hashing and ciphers.
Password Generator — Generate strong random passwords or memorable passphrases with full control over length, charset and entropy estimate.
ID Generators — Generate UUID v4/v7, ULID, NanoID and Snowflake IDs in bulk with copy and CSV export.
JWT Toolkit — Decode JSON Web Tokens to inspect header, payload and signature, or generate signed JWTs with HS256/RS256.
Hash & HMAC — Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 and HMAC hashes locally in your browser — nothing uploaded.
Text Encryption — Encrypt and decrypt text with AES-GCM, plus classic Caesar and Vigenère ciphers, all in the browser.
Keys & Certificates — Free, private key & certificate studio: JKS/PKCS#12 keystores, self-signed TLS certs (RSA/ECDSA/Ed25519) with a local CA, SSH keys with PuTTY export, CSRs, PEM/DER and JKS↔P12 conversion, certificate inspection and config scaffolding. Runs entirely in your browser.
Keystore Studio — Generate an RSA key, self-signed X.509 certificate and a password-protected JKS + PKCS#12 keystore in your browser — the exact output of keytool -genkey, for Android/Java release signing and more.
TLS / SSL Certificate — Create self-signed HTTPS certificates (RSA, ECDSA or Ed25519) with Subject Alternative Names for localhost, staging and internal services — or spin up a mkcert-style local Certificate Authority that issues trusted leaf certificates. Key, cert and full chain in PEM, generated locally.
SSH Key Generator — Generate Ed25519, ECDSA or RSA SSH key pairs in OpenSSH format with SHA256 fingerprint and randomart, plus a PuTTY .ppk export — a private, in-browser ssh-keygen. Public key, private key and authorized_keys line.
CSR Generator — Create a PKCS#10 Certificate Signing Request (RSA, ECDSA or Ed25519) and its private key to submit to a Certificate Authority — or build a CSR from a private key you already have. Full Distinguished Name and Subject Alternative Names, generated in your browser.
PKCS#12 Bundler — Package a private key and certificate chain into a portable PKCS#12 (.p12/.pfx) keystore, extract an existing one back to PEM, or convert between JKS and PKCS#12. AES-256, readable by Java, OpenSSL, Windows and macOS.
Format Converter — Convert certificates and keys between PEM and DER, RSA keys between PKCS#1 and PKCS#8, encrypt or decrypt a private key, split a certificate chain and extract public keys — with Base64 and hex views. Fast, private, in-browser.
Certificate Inspector — Decode X.509 certificates, CSRs and JKS/PKCS#12 keystores (RSA, ECDSA or Ed25519) to view subject, issuer, validity, SANs, key details and fingerprints, and verify a private key matches a certificate. Everything runs locally in your browser.
Config Scaffolder — Generate project config files: .env with cryptographically strong secrets, composable .gitignore, an open-source LICENSE and common config dotfiles — all offline.
Web & Design Tools — Front-end dev tools: CIDR calculator, color converter, CSS gradient, CSS shadow and favicon generators, OG image creator and color palette extractor.
CIDR / Subnet Calculator — Calculate network, broadcast, mask, usable hosts and subnet ranges for any IPv4 or IPv6 CIDR block.
Color Studio — Convert between HEX, RGB, HSL and OKLCH and check WCAG AA/AAA contrast ratios for text and UI.
CSS Gradient Generator — Build linear, radial and conic CSS gradients with multiple stops and copy the production-ready CSS.
CSS Shadow Generator — Design layered CSS box-shadow and text-shadow effects with live preview, multiple shadow-sm layers, inset support and one-click production-ready CSS output.
Favicon Generator — Generate favicons from text, emoji or initials. Custom background and font. Download PNG in all sizes: 16, 32, 48, 64, 128 and 180 px plus an HTML link tag.
OG Image Generator — Design 1200×630 Open Graph images for social sharing with gradient backgrounds, emoji, title, subtitle and domain. Export PNG and copy meta tags for any site.
Palette Extractor — Upload any image to extract a dominant color palette of 4–12 colors. Copy HEX, RGB or HSL values and export as CSS variables, JS array or Tailwind config.
HTTP & Network Tools — Developer network tools: cURL command converter, DNS lookup, SSL certificate checker and regex pattern library.
cURL → Code Converter — Convert cURL commands to JavaScript (fetch), Python (requests), Go, PHP, Java and Ruby code instantly. Paste any curl command and get production-ready code.
IP & DNS Lookup — Query any domain's DNS records — A, AAAA, MX, TXT, CNAME, NS and SOA — instantly via Google Public DNS. Debug email routing, domain setup and propagation.
SSL Certificate Checker — Inspect SSL/TLS certificate details for any domain: validity, expiry, issuer, subject alternative names and certificate chain via crt.sh.
Converters & Misc — Everyday utilities: metric and imperial unit conversion, number-to-words for cheques, side-by-side text diff highlighting and a calculator with history tape.
Unit Converter — Convert between metric and imperial units of length, weight, volume, temperature, speed, area and more.
Number to Words — Convert any number — integers, decimals or currency — into written English words for cheques and invoices.
Text Diff & Compare — Compare two blocks of text side by side with line and word-level diff highlighting and copy support.
Calculator — Basic arithmetic calculator with a persistent history tape, memory keys and full keyboard support. Works offline.
Text Tools — Five text utilities in one hub: case converter, Unicode font styler, find-and-replace with regex, word counter and Roman numeral converter. Free, no install.
Case Converter — Switch text between sentence, title, UPPER, lower, alternating and inverse case in one paste.
Unicode Fonts — Turn plain text into bold, italic, script, fraktur, small caps, monospace and dozens of other Unicode font styles.
Find, Replace & Sort — Find and replace with regex, sort lines alphabetically or numerically, remove duplicates, trim whitespace and wrap columns — instant, nothing uploaded.
Text Analysis — Word, character, sentence and paragraph counts, reading time, readability grades (Flesch, Fog, SMOG), keyword density and offline sentiment analysis.
Roman Numerals — Convert any number from 1 to 3999 — or any calendar date — into classic Roman numeral notation.
Markdown & Docs — Live Markdown editor, HTML/plain text converter and a powerful dummy data generator for testing layouts, components and APIs.
Live Markdown Editor — Write Markdown in a clean, distraction-free editor with a live HTML preview side by side. Export as HTML, download or copy the rendered output in one click.
Markdown to HTML — Convert Markdown to HTML or plain text and back, with safe sanitisation and copy-ready output.
Lorem & Dummy Data — Generate placeholder text, Markdown, HTML, Lorem Ipsum, JSON or CSV with full control over paragraphs, words, titles, lists, tables, code blocks and more.
Code Formatters — Format and beautify JSON, SQL, HTML, CSS, JavaScript, TypeScript, YAML and more.
Prettier Formatter — Beautify JavaScript, TypeScript, HTML, CSS, SCSS, LESS, JSON, Markdown and YAML in your browser using Prettier. Instant formatting with zero configuration.
JSON Toolkit — Pretty-print, minify and validate JSON with live structure stats and size differences.
SQL & XML Formatter — Beautify SQL queries across 10 dialects, or pretty-print and minify XML, SVG, RSS and OPML — all in one tool.
Regex Tester & Library — Test JavaScript regular expressions with live match highlighting, flag toggles and capture groups, or load 47+ ready-made patterns for email, URL, IP and dates.
Data Converters — Convert between JSON, YAML, CSV, XML, TSV, Markdown tables and query strings in one click. Paste any format and get instant output in every other format.
Structured Data (JSON/YAML/XML) — Convert between JSON, YAML, XML and TypeScript types with formatting and validation in one place.
Tabular Data (CSV/TSV) — Convert spreadsheets between CSV, TSV and Markdown tables with header detection and live previews.
Encoders & Decoders — Encode and decode Base64/URL/HTML, build URL slugs and convert between number bases.
Base & Text Encoders — Encode and decode Base64, Base32, Base58, Base85, Morse code and binary — all directions, entirely in your browser.
Escape & HTML Entities — URL percent-encoding, HTML entity escaping and Unicode \uXXXX escape sequences — encode and decode in both directions, entirely in your browser, no uploads.
URL Parser & Inspector — Parse any URL into protocol, host, pathname, query string parameters and fragment hash in one click. Rebuild or debug deep-linked and API URLs without guessing.
Slug & Base Converter — Build URL-friendly slugs and convert numbers between any base from 2 to 36 (binary, octal, decimal, hex and beyond).
PDF & Image Tools — Write or scan to PDF, merge and split files, extract text with OCR, convert, resize and compress images, and generate or scan QR codes — all in your browser.
Text & Images to PDF, Merge/Split — Write, scan or convert photos to PDF; merge and split files; add watermarks, passwords and a searchable OCR text layer. All local, no uploads.
PDF Editor — Sign, Fill & Annotate — Edit any PDF in your browser: edit existing text in place, sign (incl. certificate signatures), fill and create forms, truly redact, measure distance & area, OCR scans into searchable text, add accessibility tags, watermark, crop, N-up/booklet layouts, batch-process many files, password-protect, compress and combine. No uploads, no watermarks.
Compare PDFs — Visual & Text Diff — Compare two PDF files in your browser: side-by-side pages, a visual difference heatmap, and a word-level text diff showing exactly what was added or removed. No uploads.
OCR — Image & PDF to Text — Run optical character recognition on images and PDFs in your browser. Extract text without any uploads.
Image Converter, Resize & Enhance — Convert, resize and compress PNG, JPG, WebP and AVIF images, enhance photos with AI upscaling, and make official-size passport photos — all in your browser.
QR Code Generator & Reader — Generate styled QR codes for URLs, text or contacts and decode QR codes from any image.
Audio & Subtitle Tools — Free browser-based audio tools: trim, merge, convert, compress, denoise, speed-change and split audio, extract audio from video, text-to-speech, on-device dictation and subtitle conversion. No uploads — 100% private.
Audio Cutter — Trim, Silence & Split — Cut audio in your browser: trim a section on a visual waveform, auto-remove silent gaps, or split a recording into parts — three jobs on one loaded file, no uploads.
Audio Converter — Convert, Compress & Extract — Convert audio between formats, compress file sizes with quality presets, or extract the soundtrack from MP4/MOV/WebM video — one on-device tool, no uploads.
Audio Merger — Combine MP3, WAV, FLAC, M4A and OGG files into one track — sequentially with crossfade, or overlaid as a mix. Runs entirely in your browser.
Audio Speed Changer — Speed audio up or slow it down from 0.5× to 4× without changing pitch — ideal for lectures, podcasts and language practice. Fully on-device.
Subtitle Converter & Re-timer — Convert subtitles between SRT, VTT, SBV, ASS and plain text, or fix out-of-sync captions by shifting and rescaling timing. Pure text, fully offline.
Audio Noise Remover — Remove hum, hiss, wind and background noise from recordings with an on-device AI model (RNNoise) or a manual spectral gate with noise-fingerprint learning. No uploads.
Text to Speech — Turn text into natural speech using your device's built-in voices, with speed, pitch and volume control. On-device voices only — your text never leaves the browser.
Speech to Text (On-Device) — Dictate and get a live transcript with the browser's on-device speech model — audio is never sent to a server. Export plain text or a timed SRT caption file.